Photographic-printing machine.



PATENTED MAY 21, 1907. J. G. CALHOUN. PHOTOGRAPHIO PRINTING MACHINE APPLIOATION FILED MAY 17,1906

2 SHEETS-SHEET l.

I cwwwi g'c lose \1 (1% n1: NORRIS PETERS ca. wnsnmman. v c.

PATEN'I'ED MAY 21, 1907.

J.G.GALHOUN. PHOTOGVRAPHIO PRINTING MACHINE,

APPLIOATION FILED MAY 17, 1906,

2 srmgccs-snzm 2. 1 6 .9 0 7 lTltl) STATES PATENT OFFICE.

Josnri-i o. CALHOUN, or noLLiiivn, memoir, ASSIGNOR or ONE-HALF TO GEORGE P. HUMMER, or GRAND RAPIDS, MICHIGAN.

PHOTOGRAPHIC-PRINTING NIACHENE,

Specification of Letters Patent.

Patented May 21, 1907.

Application filed May 17,1906. $e1'ial No. 317,275.

To (tZZ whom it may concern.-

Be it known that l, Josnrn C. CALHOUN, a citizen of the United States, residing at Holland, in the county of Ottawa and State of Michigan, have invented certain new and useful Improvements in Photograph-Printing Machines and I do hereby declare the following to be a full, clear, and exact descrip tion of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to innarovements in photograph printing machines, and its object is to provide a device operated by arti- 'licial light that is simple and. convenient; and to provide the same with improved. mechanism adapted to change the light and stop the printing at a predetermined time of exposure; and. to provide the device with various new and. useful features hereinafter more fully described and. particularly pointedv out in the claims.

My device consists essentially of a case in which a light is placed, means for holding the paper in contact with the negative, a switch for shifting the current and changing the light and clock mechanism adapted to shift the switch, and adjustable for time, whereby the light is changed after a predetermined time of exposure, as will more fully appear by reference to the accompanying drawings, in which:

Figure 1. is a perspective view of the device embodying my invention; Fig. 2. a plan view of the same; Fig. 3. a vertical section of the same on the line 33 of Fig. 4.; Fig. 4. the same on the line t l of Fig. 2. Fig. 5. a detail in plan view of a modified switch; and Fig. 6. the same in side elevation.

Like numbers refer to like parts in all of the figures.

1 represents a case of any convenient dimensions provided with a transparent panel 2 preferably of plate glass closing an opening in. the top of the case.

3 is a frame to carry the platen, hinged at one side as at 39 and provided. with a handle 40. This frame when in. operative position is above the 2, and when opened up to release the print ei'igagcs a vertically movable pin 10 and releases the paper from the negative as hereafter described' In this frame is a tray 5 in. which is supported an elastic platen or pad 4 to engage the print and press the same in contact with the negative placed upon the glass 2. To hold the print in place while closing the platen down upon the same, I provide a tape 6 extending across between the platen and the glass and preferably made elastic, but the tape may be made inelastic, if preferred, if the lovers 7 are used. This tape at its respective ends extends outside the glass and platen and is attached to pivoted levers 7 extending through openings in the top of the case and connected by a cross-bar S engaged by a spring 9, which spring raises the bar and. depresses the forward ends of the levers to bring the tape 2 down upon the back of the print. The pin 10 is vertically movable in the top of the case and engages the bar 8 to depress the same when engaged by a plate 38 on the frame 3 as the frame is opened up.

11 represents a group or cluster of electric lights in the same circuit. 12 is a red light in a separate circuit. 13 represents the circuit connecting these lights with any source of an electric current.

1 1 is a wire connecting the switch with the lights 11, and 15 another wire connecting the switch with the light 12 to separately operate the same. The switch is provided with a lever 16 connected to the operating circuit 13 and alternately engaging the contacts 17 and 18. The contact 17 is in circuit with the white lights 11 and the contact 18 is in circuit with the red light 12. An upwardly projecting handle 19 serves to shift the switch lever 16 as the handle is alternately engaged by the arm 20 and the lever mounted on a disk 21, which disk is rotated by a spring 22 connected to the same by a train of gearing 23 and arranged to rotate the disk in a given time (preferably in one minute) by means of an escapement 2 1.

The lever 25 is adjustable about the axis of the disk at intervals (preferably whereby the number of seconds of exposure is determined by adjustment of said lever. To adjustably hold the lever 25 in place on the disk, a latch. 28 engages recesses in the edge of the disk, preferably numbered to indicate the seconds of exposure, said latch being detachably held in place by a spring 27.

The device is shown in position for thirty seconds exposure, with the red light turned on, in which position when the platen is opened, the levers 7 will be depressed at the rear and raise the tape clear of the glass 2 beneath which tape is placed the negative and the paper o he cxpcscd. hen the platen is closed, tl e first part cl its movement will permit the tape to descend and grip the paper. thus holding the same until the platen is it place upon the paper. The elastic mater t ".iill press the paper closely in contact with the negative by virtue ol'thc Weight of the 'i'rame and mintentsv Bv turning the arm 25 arotind in contact with the projection It), the sfi tch lever 16 shifted to engage the contact 17 and thus close the circuit ol the White light. The clock work will now rotate the dish 21. and in. the pre-determined time bring the arm 2t) in Contact with the handle it) and shift the switch lever 16 from the contact 17 to the contact 18 and thus cut out the 1=Jhite light and turn on the red light and stop the exposure at the pre-determined time. To prevent arcing ol' the svvitch, l prel'er to use the modification shown in Figs. 5 and (S, in which the c mtacts 17 and 18 correspond in function and arrangement to the contacts 17 and 18, but are upn'ardh turned at their adjacent ends instead of horizontal.

On the lever 16 I provide spring electrodes or contacts 3; and 33 to respectively engage the same. To normallv shil't this lever to close the red light circuit, I provide a spring 31; and to hold the lever in contact with the contact 17 and close the '-;-.'hite light circuit, I provide a latch 3i he n engagement with the lever 16 l v a \vcig and released by an upivardlv projectin n mher 35 engaged by the arm in. A sto 36 holds this latch in proper position xvhen disengagel from the lever 16. "his snitch is set to close the white light circuit h v contact of the arm 25 with the handle 19, in the other l'orm ot switch.

'hat I claim is:

1. In a phitograph d i ht 37 printing machirc,

t 1 the comhinatio 1 oi means for holding se tized paper m contact with a negative, an electric light, a S'ffli' 'h to open and close the circuit of the light, a clocl; adapted to open the switch, and m *ans l'or, adiusting the clock to open the snitch at a pre-de. mined time.

2. In a photograph pri tting machine, the combination OI means for holding sensitized paper in contact with a negative, an electric light ol actinic color, an electric light of non-actinic color, a separate circuit for each light, a switch adapted to slr'lt the circuits, a clock mech: nism to shitt the switch ata predetcrmined time, and means to adjusting the clock mechanism to determine said ime.

3. In a photograph printing machine, a case having a transparent panel. a movable platen opposite the panel, an electric if in said case, a svvitch to close and break the cir- BS E 076 cuit ot the light, clocii mechanism adapted to slnlt the Svfltt'll, and means l'cr ad usting said mechanism to lctcrnnne the time ol' exa same and it the circuits, a I ter adjustahle on said dish and also adapted to engage said lever, and means lcr rotating the disk at a prcdctermined rate ol speed.

5. In a photograph printing machine, means lor holding scnsitii cd paper in contact with a negative, an electric light. a

svqitch to close and open the circuit HI the light, two relat1vcl v adplstah c memlcrs to 1'(r%}) ('lt\'tl f close and open the switch, and

clock mechanism to move said mcmhers at a redetcrmincd rate ol' speed.

(5. In a photograph printing machine, a case, a transparent panel in the case, an elastic tape extending across the panel, a movaide and clan 1- phtten alzove the panel, an actinic ight in the case. and means tor extinguishing the light alter a n'cdctermineil time ot exposure.

In a photograph printing machine, a

case, a transparent pancl in the case, pivoted arms at the respective sides ol the panel, a tape a; ache-d to said arms and extending across t re panel, a spring to move the arms in one direction, means ior moving the arms in the opposite direct ion. an elastic and movaide platen ai ove the panel, an actinic light in the case, and means ior automatically extinguishing the ight at a prcdcte'rmincd, time.

H. In a photograph printing machine, a case. a transparent panel,in the case, pivoted levers at the respective sides oi the panci. a tape attached to the lcvc'i's a (l extending across the panel, a spring to move the levers in one direction, a pin to move the lovers in the opposite direction. and aplatcn hinged to the cascand adapted to rest upon the panel \vhcn closed and to engage and move the pin when opene-Llv [3. In a photograph printing machine. a e, a transparent panel in the -asc, a move t. e extending across the panel, a movalrove the panel, \vhite eicctric I ght and a red electric light in the case, seoaiatc circuits tor the rcspccii'\ nine and e astic platen IlG switch lever and oppositely move the same, and a latch on the last named lever to engage the recesses in the disk.

10. In a photograph printing machine, a case, a transparent panel in the case, levers at the respective sides of the panel, a tape attached to one end of each of said levers, and extending across the panel, a bar connecting the other ends of said levers, a spring and a pin oppositely engaging said bar, a 'l ra'ine hinged to the case and engaging said pin when opened, an elastic pad in the frame, an actinic light in said case, and means for extinguishing said light after a predetermin ed time of exposure.

11. In a photograph printing machine, a case, a transparent panel in the case, an elastic tape extending across the panel, pivoted levers to which the tape is attached, a V

spring to move the levers in one direction, a pin to move the levers in the other direction, a frame hinged to the case said. frame resting upon the panel when closed and engaging the pin when open, two diflerently colored electric lights in said case, tWo separate circuits for said lights, a switch to shift said circuits, a disk, clock mechanism for rotating the disk, an arm and a lever on said disk and adapted to oppositely move the switch, and means for relatively adjusting the arm and lever on the disk.

In testimony whereof I aflix my signature in presence of two Witnesses.

JOSEPH C. CALHOUN.

\Vitnesses ELLA BALGOOYER, M. J. SonooN. 

